553666-72-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 553666-72-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,3,6,6 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 553666-72:
(8*5)+(7*5)+(6*3)+(5*6)+(4*6)+(3*6)+(2*7)+(1*2)=181
181 % 10 = 1
So 553666-72-1 is a valid CAS Registry Number.